A man who has intercourse with a mahram relative

Khalid said that Jabir bin Zayd said, concerning a person who has intercourse with a woman within his forbidden degrees (mahram): His neck is to be struck.

Ikrimah said that Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: Kill every person who has intercourse with a woman within his forbidden degrees (mahram).

Sayyiduna al-Bara' bin Azib (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) sent a messenger to a man who had married his father's wife, and he ordered him to bring back his head.

Adi bin Thabit said that Sayyiduna al-Bara' (may Allah be pleased with him) said: I met my maternal uncle while he had a banner with him. I asked him about it, and he said: The Prophet (peace and blessings be upon him) has sent me to a man who has married his father's wife, to kill him or to strike off his neck.

Bakr said: A man who had committed zina with his own daughter was brought before al-Hajjaj. Al-Hajjaj said: I do not know by what manner I should kill this man. And he intended to crucify him. Then Abdullah bin Mutarrif and Abu Burdah said to him: Allah has veiled the faults of this community. The most preferable trial is that which Islam has veiled. Kill him. He said: You have both spoken the truth. So on his order he was killed.

Hafs said: I asked Amr: What did al-Hasan al-Basri use to say about a person who knowingly marries a woman within his forbidden degrees (mahram)? He said: The prescribed punishment (hadd) is due from him.